Griffiths phase and its evolution with Mn-site disorder in the half-doped manganitePr0.5Sr0.5Mn1−yGayO3(y=0.0, 0.025, and 0.05)

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
A. K. Pramanik ◽  
A. Banerjee
Keyword(s):  
Griffiths Phase ◽  
Site Disorder

A-site-disorder-dependent percolative transport and Griffiths phase in doped manganites

2004 ◽  
Vol 70 (22) ◽  
Author(s):  
N. Rama ◽  
M. S. Ramachandra Rao ◽  
V. Sankaranarayanan ◽  
P. Majewski ◽  
S. Gepraegs ◽  
...  
Keyword(s):  
Griffiths Phase ◽  
Site Disorder ◽  
Doped Manganites ◽  
A Site

scholarly journals B-site disorder driven multiple-magnetic phases: Griffiths phase, re-entrant cluster glass, and exchange bias in Pr2CoFeO6

2019 ◽  
Vol 114 (25) ◽  
pp. 252403 ◽  
Author(s):  
Arkadeb Pal ◽  
Prajyoti Singh ◽  
V. K. Gangwar ◽  
Surajit Ghosh ◽  
P. Prakash ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Griffiths Phase ◽  
Magnetic Phases ◽  
Site Disorder

THE DYNAMICS OF DISORDERED MAGNETS IN THE GRIFFITHS PHASE, INVESTIGATED BY NEUTRON SCATTERING

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1047-C8-1048
Author(s):  
R. G. Lloyd ◽  
P. W. Mitchell ◽  
R. C. C. Ward ◽  
M. Cherrill
Keyword(s):  
Neutron Scattering ◽  
Griffiths Phase ◽  
Disordered Magnets

Rapid Crystallization and Kinetic Freezing of Site-Disorder in the Lithium Superionic Argyrodite Li6PS5Br

2019 ◽  
Author(s):  
Ajay Gautam ◽  
Marcel Sadowski ◽  
Nils Prinz ◽  
Henrik Eickhoff ◽  
Nicolo Minafra ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Synthesis Method ◽  
Reaction Times ◽  
Ionic Conductivities ◽  
Ionic Transport ◽  
High Energy ◽  
Superionic Conductors ◽  
Rapid Crystallization ◽  
Site Disorder ◽  
Fast Cooling

<p>Lithium argyrodite superionic conductors are currently being investigated as solid electrolytes for all-solid-state batteries. Recently, in the lithium argyrodite Li<sub>6</sub>PS<sub>5</sub>X (X = Cl, Br, I), a site-disorder between the anionsS<sup>2–</sup>and X<sup>–</sup>has been observed, which strongly affects the ionic transport and appears to be a function of the halide present. In this work, we show how such disorder in Li<sub>6</sub>PS<sub>5</sub>Br can be engineered <i>via</i>the synthesis method. By comparing fast cooling (<i>i.e. </i>quenching) to more slowly cooled samples, we find that anion site-disorder is higher at elevated temperatures, and that fast cooling can be used to kinetically trap the desired disorder, leading to higher ionic conductivities as shown by impedance spectroscopy in combination with <i>ab-initio</i>molecular dynamics. Furthermore, we observe that after milling, a crystalline lithium argyrodite can be obtained within one minute of heat treatment. This rapid crystallization highlights the reactive nature of mechanical milling and shows that long reaction times with high energy consumption are not needed in this class of materials. The fact that site-disorder induced <i>via</i>quenching is beneficial for ionic transport provides an additional approach for the optimization and design of lithium superionic conductors.</p>

scholarly journals Epidemic growth and Griffiths effects on an emergent network of excited atoms

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
T. M. Wintermantel ◽  
M. Buchhold ◽  
S. Shevate ◽  
M. Morgado ◽  
Y. Wang ◽  
...  
Keyword(s):  
Complex Systems ◽  
Power Laws ◽  
Excitation Density ◽  
Griffiths Phase ◽  
Many Body ◽  
Excited Atoms ◽  
Equilibrium Dynamics ◽  
Many Body Systems ◽  
Excitation Number ◽  
Non Equilibrium

AbstractWhether it be physical, biological or social processes, complex systems exhibit dynamics that are exceedingly difficult to understand or predict from underlying principles. Here we report a striking correspondence between the excitation dynamics of a laser driven gas of Rydberg atoms and the spreading of diseases, which in turn opens up a controllable platform for studying non-equilibrium dynamics on complex networks. The competition between facilitated excitation and spontaneous decay results in sub-exponential growth of the excitation number, which is empirically observed in real epidemics. Based on this we develop a quantitative microscopic susceptible-infected-susceptible model which links the growth and final excitation density to the dynamics of an emergent heterogeneous network and rare active region effects associated to an extended Griffiths phase. This provides physical insights into the nature of non-equilibrium criticality in driven many-body systems and the mechanisms leading to non-universal power-laws in the dynamics of complex systems.

Diffused metal-insulator transition in NdNiO3 film grown on BaTiO3 : Likely evidence of electronic Griffiths phase

2021 ◽  
Vol 5 (8) ◽  
Author(s):  
Parushottam Majhi ◽  
Sudipta Chatterjee ◽  
Ravindra Singh Bisht ◽  
V. Raghavendra Reddy ◽  
Barnali Ghosh ◽  
...  
Keyword(s):  
Insulator Transition ◽  
Griffiths Phase ◽  
Metal Insulator Transition ◽  
Metal Insulator
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